Electric resistance element



W. P. BOVARD.

ELECTRIC RESiSTANQE ELEMXNT: APPLic/Tlow man nu: zo. 192x.

433,933 39mm 00a 31,1922.

Patented Oct. 31', 1922.

WILLIAM P. BOVARD, GF MANSFIELD,

OHIO, .ASSIGNOR T THE OHIO BRASS COMPANY, 0F MANSFIELD, DHIO, A. CORPORATION OF NEW JERSEY.

ELECTRC RESISTANCE ELEMENT.

Applieation filed Iieeember 20, 192i. Serial No. 523,735.

Be it known that l, VYLLTAM P. Bovino,

citizen oit the United States el? zfneriea,l

residing at nvl'ansiieldi, in the county of Richland and Stilte oi Uhio7 have invented certain new and nsetui improvements in Electric Resistance l'llements. of which the following is speeiiieaton.

Mv invention relates to a resistance elenientA :ind is particularly adapted iter use either singly or in sets eombined tor different resistanees and capacity for the control of electric currents.

Mv invention resides in the construction, eoinhination and relation of parts more fully disclosed described hereinafter. A

ln the accompanying drawings, F l e. plan view of my invention. n

Fig. 2 is a sectional view on the hoe 2 2 of Fig. l.

In the preferred form of mvconstruetionn l employ a frame l made preferably or m ,te-l, Apertzires are provided in the frame to receive the rods as shown. il hese rods preferably oi metal although theirv may be roede of insulating materiel it desired. to proie/et troni e The rods are inoiinted n and provided with ineens 5S v the rods are secured place-end with reference 'to the frame l..

erich rod is z 'noi'nted a plurali l Ikieznbers Ll ronde pi us insul teria su one. o; i ino; memoers mounted on a red as reunen. and el are heli.

, nid. b v the upon the rod i? and in clamping' engagestainfe element o.

one

plete groove to reent; that is, nali? m to form embers comprise appli/ir of spaced from the rod 2 thereby holding the resistance element out of Contact. with the rod 2.

The resistance elementl G is of helieally wound wire clamped in the groove 7-7 or S-S or it marxv be the wire unformed or rods, depending upon the capacity requirements en the element.

To the l" e l at suitable points are seeured terminal members 9-9 provided with nut-s l() for clamping the terminals to the frame and the ends of the resistance element to the terminals. Insulating elements ll are interposed between the frame and terminals. The nut l2 permits clampinga lead wire to the terminal.

My invention can be used for many purposes where it is desired to mount a resistance in unit Aform and any number of unit-s may be used together and Connected to seenre different results as to resistance and current capacity as is well known in the art.

l. A resistance unit comprising' a trame, a rod secured to two opposite sides of the frame. :i plurality oi' clamping members arranged in cooperating pairs mounted on the rod and each pair provided with grooves o 'ated on oppositeY sides of the rod, a resistance element mounted in the grooves and terminal means secured to the frame to receive the ends of the resistance element and conductors to be attached thereto.

A resistance unit Comprising a frame, n rod edj'ustably secured to two opposite sides of the frame, a plurality of clamping:r members arranged in pairs mounted on the rod and each pair provided with groofes located on opposite sides of the rod, a resistance element mounted in the grooves and terminal means secured to the frame to receive the ends of the resistance element and eonduetors to he attaohed thereto.

3. A resistance unit. comprising a frame, af' rod seemed to two opposite sides of "the trame, a plurality of clamping members arranged in pairs adjustably mounted on eaeh 'rod and each pair provided with grooves located on oppositesides of the rod, a resistanee element mounted in the grooves-and terminal means secured to the frame to reee'ive thev ends of the resistance element and conductors to be attached thereto,

A resistance unit comprising` a trarne,

a rod secured to two opposite sides ot the tramo, pair ot clamping members mounted on'the rod and provided with a groove on each' 4'ide ofthe rod to receive a resistance clement, a resistance element mounted in the i grooves, terminals secured to the trame and.

having the ends of the resistance elements secured t9 the terminals.

5. A resistance unit coinprising a frame, a rod secured to two opposite sides ot the frame. a pair ol clamping members mounted,

on the rod and provided With a Crgroove `on each side of the rod to receive a resistance element, and a resistance element mounted in the grooves.

iii support 'for a resistance element comprising a trame, a rod secured to the trame,

a Vpair ot counterpart insulating members mounted on the rod, grooves in the insulating members to receive a resistance element and means to' hold the insulating members in clamping; relation on the resistance el- 7, lr resistance element support compristhe rod, said part-grooves on the same side ot the rod enacting with each other to 'form a .clamping means tor a resistance element and means to hold the insulating members iii clampingl relation on a resistance ele ment. Y 4

t3. il resistance unit comprising a rame,a pair of counterpart insulating members mounted on a rod and disposed on opposite sides of the rod and havingadjacent faces, a groove formed in the adjacent faces ot tie insulating members3 ons on each side et the rod to receive a resistance element.y means on the rod for holdino the parts of the insulating members in o amping position on the resistance clement and in position. on the rod and a resistance element mounted in the grooves.

9. A resistance unit comprising a trame, a rod secured to the frame,a plurality ot insulatingmenibers in pairs mounted on the rodi e: :h pair of insulating members provided with coactinggrooves to receive a resistancel element, `a resistance element mounted in the grooves and means to hold the insulating elements in` position ou tbe rod and in holding engagement with the 'resistance element.

l0. A resistance unit comprising a frame.

resistance element mountedl in the groovesand means to hold the insulating elements in engagement -With the resistance element. j

ll. A resistance unit comprising a frame, supporting mea-ns secured tothe trame, a pluralit of pairs of insulating members mountec on the supporting means and free to move longitudinally thereof, means on each pair of insulating members to receive a resistance element, means acting on the 7 end insulating members to hold each pail' or insulating members in position upon the rod and a resistance element mounted/iu the aforesaid receiving means.

l2. A resista-nce unit comprising a supporting trame, supporting means on the trame7 an insulating member formed of tivo parts mounted on the supporting means, means formed in the adjacent faces of the insulating:r parts and positioned on opposite sides of the supporting means to receive a resistance element, each ol' said receiving means for the resistance element resting in` dierent planes at right angles to the axis of the supportingmeans, a resistance element in the receiving means and means to hold the insulating parts inclamping position relative to the resistance element.

13. resistance unit comprising a supporting frame, a plurality ot supporting means secured to the dtraine, a plurality of pairsoi insulatingmembers mounted on. each supportingmeans, each pair of insulating members having adjacent faces with means on the adjacent faces to receive a resistance element., and each supportingmeans having a pair of insulatingmenbers with said receiving means corresponding with receiving means on the other supporting means, a resistance element in the receiving means and means to maintain the insulating members in holding relation upon the resistance element.v

14E. A resistance unit comprising a sup-.4 porting' trame, a supporting means for insulating members, insulating members mounted in pairs upon the supporting means, means between the insulating members ot each pair to receive a resistance ele ment and meanslto hold the insulating mem- 115 bers in clamping relation to the resistance element. u

l5. A resistance unit comprising a supportingn trame, a supporting means for insulating members, insulating members 120 mounted in pairs upon the supporting means', a means between-,the insulating` mem: bers ot each pair Vand yon opposite sides of 1 the supporting means to receive a resistance element and means to hold the .insulating members clamping relation `to they resistance element.' l

16: istance vunit comprising ag'supporting :\-'rame, a supporting means for insulating members, insulating members :mit

momma@ in puzs :xpam the @owing mams, u. means between umm ber's Gf web pair and m1 0ppm; Suivi; 'the supp/Uffing; mer; io Vecchi) n, xmszmce elem/@31 "i inca my huid nffliwumtng piana@ Sstance elemesnt.

18. suppcrt foy :1 iesihamc@ dimmi compmsmg nu suppmf member, a plumb fmembm 'in QL csxmin on 

